statsmodels/statsmodels — pull request #2149 by jonahwilliams (2014-12-19 18:54:36+00:00)
Title: set dtype of det_cov_params to np.float in _res_loo  issue  #2148

dtype of det_cov_params is np.int, values of det of cov_params are
frequently less than 1 and geting set to zero, change dtype to np.float
so they aren't lost